.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    z-index: 1;
}
.container {
    position: relative;
    z-index: 2;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}
.top-bar {
    background-color: #112d4e;
    color: white;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    z-index: 3;
    top: 0;
}
.main-content {
    margin-top: 60px;
}
table {
    border-collapse: collapse;
    width: 80%;
    margin: 20px auto;
    opacity: 0.9; /* 设置表格不透明度 */
}
th, td {
    padding: 8px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}
th {
    background-color: #dbe2ef;
    color: #112d4e;
}
td {
    background-color: #f9f7f7;
}
.btn-approve {
    background-color: #3f72af;
    color: white;
    border: none;
    padding: 5px 10px;
    margin-right: 5px;
    cursor: pointer;
}
.btn-reject {
    background-color: #d9534f;
    color: white;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
}
.btn-approve:hover, .btn-reject:hover {
    opacity: 0.8;
}